/*
 * Copyright (C) 2011 by Fabien Barbero
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.flickr.desktop.gui.views.handlers;

import com.flickr.desktop.gui.views.comps.PaginatedPanel;
import com.flickr.desktop.gui.views.listeners.ValueListener;
import org.codeartisans.java.sos.threading.WorkQueue;
import org.codeartisans.java.sos.views.handlers.ClickHandler;
import org.codeartisans.java.sos.views.handlers.HandlerRegistration;
import org.codeartisans.java.sos.views.handlers.HasClickHandlers;
import org.codeartisans.java.sos.views.notifications.ClickNotification;

/**
 *
 * @author Fabien Barbero
 */
public class PaginatedSelectionHandlers<T> implements HasClickHandlers<T> {

    private final PaginatedPanel<T> panel;
    private final WorkQueue queue;

    public PaginatedSelectionHandlers(PaginatedPanel<T> panel, WorkQueue queue) {
        this.panel = panel;
        this.queue = queue;
    }

    @Override
    public HandlerRegistration addClickHandler(final ClickHandler<T> handler) {
        final ValueListener<T> listener = new ValueListener<T>() {

            @Override
            public void valueChanged(final T newValue) {
                queue.enqueue(new Runnable() {

                    @Override
                    public void run() {
                        handler.onClick(new ClickNotification<T>(newValue));
                    }
                });
            }
        };
        panel.addSelectionListener(listener);

        return new HandlerRegistration() {

            @Override
            public void removeHandler() {
                panel.removeSelectionListener(listener);
            }
        };
    }

}
